Year	% (modeled ILO estimate)
1991	43.789
1992	44.982
1993	46.089
1994	47.38
1995	47.733
1996	47.465
1997	47.008
1998	46.932
1999	46.768
2000	46.494
2001	46.215
2002	46.272
2003	45.929
2004	45.564
2005	45.627
2006	45.462
2007	44.913
2008	44.342
2009	44.159
2010	44.213
2011	43.795
2012	38.975
2013	39.657
2014	37.477
2015	37.133
2016	34.698
2017	30.374
2018	31.996
2019	30.155
2020	33.798
2021	32.825
2022	32.452
2023	32.053